An apparatus and a method for imaging the mouth area laterally to produce reliable measurements of mouth and lip shapes for use in assisting the speech recognition task. A video camera is arranged with a headset and a microphone to capture a lateral profile image of a speaker. The lateral profile image...http://www.google.fr/patents/US6185529?utm_source=gb-gplus-shareBrevet US6185529 - Speech recognition aided by lateral profile image
